I heard about this app. Is it available on BlackBerry phones?For anyone interested, I found an iPhone ap geared toward 2 cycle engines and premixing. Gas mix 2.0 is the ap and it complely takes the thought (and error) out of premixing. It allows you to select the ratio and enter the gas amount in tenths of gallons or liters and gives you an exact amount of oil to add. It is definately worth looking into!